//============================================================ // // minisync.c - Minimal core synchronization functions // //============================================================ // // Copyright Aaron Giles // All rights reserved. // // Redistribution and use in source and binary forms, with or // without modification, are permitted provided that the // following conditions are met: // // * Redistributions of source code must retain the above // copyright notice, this list of conditions and the // following disclaimer. // * Redistributions in binary form must reproduce the // above copyright notice, this list of conditions and // the following disclaimer in the documentation and/or // other materials provided with the distribution. // * Neither the name 'MAME' nor the names of its // contributors may be used to endorse or promote // products derived from this software without specific // prior written permission. // // THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND // FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO // EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, // INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGE (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // //============================================================ #include "osdcore.h" //============================================================ // osd_lock_alloc //============================================================ osd_lock *osd_lock_alloc(void) { // the minimal implementation does not support threading // just return a dummy value here return (osd_lock *)1; } //============================================================ // osd_lock_acquire //============================================================ void osd_lock_acquire(osd_lock *lock) { // the minimal implementation does not support threading // the acquire always "succeeds" } //============================================================ // osd_lock_try //============================================================ int osd_lock_try(osd_lock *lock) { // the minimal implementation does not support threading // the acquire always "succeeds" return TRUE; } //============================================================ // osd_lock_release //============================================================ void osd_lock_release(osd_lock *lock) { // the minimal implementation does not support threading // do nothing here } //============================================================ // osd_lock_free //============================================================ void osd_lock_free(osd_lock *lock) { // the minimal implementation does not support threading // do nothing here }